From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2BFF830C17D for ; Wed, 24 Jun 2026 16:32:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782318770; cv=none; b=Jd1T3t2PziDKZoKoBGYZxo5eoT2KKAaqcUYV5bri84OLO1+MaFolU+6Zls6tCT1crfSYte0b2W532KF0z5sN/t0Jv5px7olRn9OnLq9jktdJwyCAKeHpim2bt+DsCBUaOL2lfWOuLQLfVqHZ1mLHxU53DlzMLH/xHcBtk4G3CNE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782318770; c=relaxed/simple; bh=sIh2Q1yqaUH8l1fPUJvOiwz0luD4PWLSG+9mQEQ5d/w=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=QkgC411Ia7Isvqtql9wOseBT7w746zinSnHkkSE4UAg5wCjsa3n3wyKW2x4ag4/MRASZGx8rVKVFtwZxOeqbgAi6j8YP9Z281+WiVq5cjapaPJiGS9ASfOgui7/iRbTOEF2hruHNiTow5a7HbNl6hfaAzbs886UOk2ULnBWFYf4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=QMsQrl0Z; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="QMsQrl0Z" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 716DF1F000E9; Wed, 24 Jun 2026 16:32:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1782318769; bh=MLX6+AuVBOed+rCAaEHqRQMDMw6g1cTZaFXKSgcoH0Y=; h=From:To:Cc:Subject:Date:Reply-To; b=QMsQrl0Z9R9CIPb7QfNf0TiaZsJud6NyrRfBSS/rXCsXeOTWsxS2WT9dXqADn6nXj Uim37vkNd8IvYSb+sJUv2N1f2oinzdWKOsWBbRsnpt55HEHtOKOU5Jrkd9AIMi1UaI DqHye4ZpD1T4sJngRSX1rtUOVoFn5evzUCsH01zo= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-52970: netfilter: nft_ct: fix missing expect put in obj eval Date: Wed, 24 Jun 2026 17:29:54 +0100 Message-ID: <2026062439-CVE-2026-52970-8bc3@gregkh> X-Mailer: git-send-email 2.54.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3316; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=WYT5IDe8KqqwAe0y6XWS27oaYyboDtXvsnnw/ZltjJk=; b=owGbwMvMwCRo6H6F97bub03G02pJDFk2rJ/nWcdaTG9/LzlBTpYx7/tTLeleNtuzMcenc0jmH C3Z62bdEcvCIMjEICumyPJlG8/R/RWHFL0MbU/DzGFlAhnCwMUpABM5HMgwP2zmxcnqAXve3Gpf FuFzrHULj0yLFsOC1Wd27RKsX8zv/zDM8sdhMXeey+tqAQ== X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_ct: fix missing expect put in obj eval nft_ct_expect_obj_eval() allocates an expectation and may call nf_ct_expect_related(), but never drops its local reference. Add nf_ct_expect_put(exp) before return to balance allocation. The Linux kernel CVE team has assigned CVE-2026-52970 to this issue. Affected and fixed versions =========================== Issue introduced in 5.3 with commit 857b46027d6f91150797295752581b7155b9d0e1 and fixed in 5.10.258 with commit cdb9a25dd3416d427e8b2753210f8baf44207577 Issue introduced in 5.3 with commit 857b46027d6f91150797295752581b7155b9d0e1 and fixed in 5.15.209 with commit 26ab32ec73941871c97562ee1f39587950dc3b68 Issue introduced in 5.3 with commit 857b46027d6f91150797295752581b7155b9d0e1 and fixed in 6.1.175 with commit 7b96242ceedfe249f158419f3254bcee04173ffe Issue introduced in 5.3 with commit 857b46027d6f91150797295752581b7155b9d0e1 and fixed in 6.6.141 with commit ecca618e1e339494911090474ed87742c0f73976 Issue introduced in 5.3 with commit 857b46027d6f91150797295752581b7155b9d0e1 and fixed in 6.12.91 with commit 2aef1b13d5c0285f340512c6c07eb858fd018fd8 Issue introduced in 5.3 with commit 857b46027d6f91150797295752581b7155b9d0e1 and fixed in 6.18.33 with commit 1dced0725e2fae3ac3416274db20a7ff5a46931d Issue introduced in 5.3 with commit 857b46027d6f91150797295752581b7155b9d0e1 and fixed in 7.0.10 with commit 84c422cea5a45fe56be839f25880f21fd33940cd Issue introduced in 5.3 with commit 857b46027d6f91150797295752581b7155b9d0e1 and fixed in 7.1 with commit 19f94b6fee75b3ef7fbc06f3745b9a771a8a19a4 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-52970 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: net/netfilter/nft_ct.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/cdb9a25dd3416d427e8b2753210f8baf44207577 https://git.kernel.org/stable/c/26ab32ec73941871c97562ee1f39587950dc3b68 https://git.kernel.org/stable/c/7b96242ceedfe249f158419f3254bcee04173ffe https://git.kernel.org/stable/c/ecca618e1e339494911090474ed87742c0f73976 https://git.kernel.org/stable/c/2aef1b13d5c0285f340512c6c07eb858fd018fd8 https://git.kernel.org/stable/c/1dced0725e2fae3ac3416274db20a7ff5a46931d https://git.kernel.org/stable/c/84c422cea5a45fe56be839f25880f21fd33940cd https://git.kernel.org/stable/c/19f94b6fee75b3ef7fbc06f3745b9a771a8a19a4